Gracefully Handle Template Errors in Golang

Constantin Druc ยท 25 Jul, 2024

In this video, we'll see how we can handle template errors gracefully in Golang.

We'll start by examining a template with a typo that results in a partially rendered page. Instead of presenting a broken page to users, which can be confusing, we'll employ a buffer to improve error handling.

By writing to a bytes.Buffer first, we will be able to test for errors before sending the final response to the client. If an error is detected during this test write, we'll return a complete "Internal Server Error" response, ensuring that users are not presented incomplete content. If there are no errors detected, we'll then transfer the buffer's content to the HTTP response.